Sorry, Uncle Bob, for the vagueness. I am trying to determine what make the disc brakes are so I can replace all replaceable parts. I recently started it and rolled it out of my garage to find I had no brakes. The rubber on the rear passenger side cylinder had deteriorated and all the fluid had leaked out. I replaced both rear wheel cylinders (drum brakes) after going to AutoZone and finding they were from a '70 Ford Torino. I will try to find something on the front disc brakes that will help me identify them so I can get the right parts. Thanks for the GM info. I am guessing it's got Nova disc brakes so I will go from there. Thank you for your help.